28350814129 has 9 divisors (see below), whose sum is σ = 31164501081. Its totient is φ = 25771783620.

The previous prime is 28350814127. The next prime is 28350814171. The reversal of 28350814129 is 92141805382.

The square root of 28350814129 is 168377.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 28350814129 - 2¹ = 28350814127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28350814127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1844494 + ... + 1859800.

Almost surely, 2^28350814129 is an apocalyptic number.

28350814129 is the 168377-th square number.

28350814129 is the 84189-th centered octagonal number.

It is an amenable number.

28350814129 is a deficient number, since it is larger than the sum of its proper divisors (2813686952).

28350814129 is an frugal number, since it uses more digits than its factorization.

28350814129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30636 (or 15318 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 28350814129 in words is "twenty-eight billion, three hundred fifty million, eight hundred fourteen thousand, one hundred twenty-nine".